SAP ABAP DECLARATIONS
From SapWiki
Generic ABAP types
Type Description any Any data type any table Internal table with any table type c Text field with a generic length clike Character-like (c, n, and string plus the date/time types d, t and character-like flat structures) csequence Text-like (c, string) data Any data type decfloat Decimal floating point number (decfloat16, decfloat34) hashed table Hashed table index table Index table n Numeric text with generic length numeric Numeric ((b, s), i, int8, p, decfloat16, decfloat34, f) object Any object type (root class of the inheritance hierarchy) p Packed number with generic length and generic number of decimal places simple Elementary data type including enumerated types and structured types with exclusively character-like flat components sorted table Sorted table standard table Standard table table Standard table x Byte field with generic length xsequence Byte-like (x, xstring)